summaryrefslogtreecommitdiff
path: root/src/encparse.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/encparse.c')
-rw-r--r--src/encparse.c954
1 files changed, 954 insertions, 0 deletions
diff --git a/src/encparse.c b/src/encparse.c
new file mode 100644
index 0000000..4c9c31b
--- /dev/null
+++ b/src/encparse.c
@@ -0,0 +1,954 @@
+/*
+Copyright (c) 1998-2001 by Juliusz Chroboczek
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+/* $XFree86: xc/lib/font/fontfile/encparse.c,v 1.18 2001/11/02 03:06:40 dawes Exp $ */
+
+/* Parser for encoding files */
+
+/* This code assumes that we are using ASCII. We don't use the ctype
+ functions, as they depend on the current locale. On the other
+ hand, we do use strcasecmp, but only on strings that we've checked
+ to be pure ASCII. Bloody ``Code Set Independence''. */
+
+#include <string.h>
+#include <stdio.h>
+
+#ifndef FONTENC_NO_LIBFONT
+
+#include "fntfilio.h"
+#include "fntfilst.h"
+
+#else
+
+#include <stdlib.h>
+#define xalloc(n) malloc(n)
+#define xrealloc(p, n) realloc(p, n)
+#define xfree(p) free(p)
+
+#include "zlib.h"
+typedef gzFile FontFilePtr;
+#define FontFileGetc(f) gzgetc(f)
+#define FontFileOpen(filename) gzopen(filename, "rb")
+#define FontFileClose(f) gzclose(f)
+
+#define MAXFONTFILENAMELEN 1024
+#define MAXFONTNAMELEN 1024
+
+#endif
+
+#include "fontenc.h"
+#include "fontencI.h"
+
+#define MAXALIASES 20
+
+#define EOF_TOKEN -1
+#define ERROR_TOKEN -2
+#define EOL_TOKEN 0
+#define NUMBER_TOKEN 1
+#define KEYWORD_TOKEN 2
+
+#define EOF_LINE -1
+#define ERROR_LINE -2
+#define STARTENCODING_LINE 1
+#define STARTMAPPING_LINE 2
+#define ENDMAPPING_LINE 3
+#define CODE_LINE 4
+#define CODE_RANGE_LINE 5
+#define CODE_UNDEFINE_LINE 6
+#define NAME_LINE 7
+#define SIZE_LINE 8
+#define ALIAS_LINE 9
+#define FIRSTINDEX_LINE 10
+
+/* Return from lexer */
+#define MAXKEYWORDLEN 100
+
+static long number_value;
+static char keyword_value[MAXKEYWORDLEN+1];
+
+static long value1, value2, value3;
+
+/* Lexer code */
+
+/* Skip to the beginning of new line */
+static void
+skipEndOfLine(FontFilePtr f, int c)
+{
+ if(c == 0)
+ c = FontFileGetc(f);
+
+ for(;;)
+ if(c <= 0 || c == '\n')
+ return;
+ else
+ c = FontFileGetc(f);
+}
+
+/* Get a number; we're at the first digit. */
+static unsigned
+getnum(FontFilePtr f, int c, int *cp)
+{
+ unsigned n = 0;
+ int base = 10;
+
+ /* look for `0' or `0x' prefix */
+ if(c == '0') {
+ c = FontFileGetc(f);
+ base = 8;
+ if(c == 'x' || c == 'X') {
+ base = 16;
+ c = FontFileGetc(f);
+ }
+ }
+
+ /* accumulate digits */
+ for(;;) {
+ if ('0' <= c && c <= '9') {
+ n *= base; n += c - '0';
+ } else if('a' <= c && c <= 'f') {
+ n *= base; n += c - 'a' + 10;
+ } else if('A' <=c && c <= 'F') {
+ n *= base; n += c - 'A' + 10;
+ } else
+ break;
+ c = FontFileGetc(f);
+ }
+
+ *cp = c; return n;
+}
+
+/* Skip to beginning of new line; return 1 if only whitespace was found. */
+static int
+endOfLine(FontFilePtr f, int c)
+{
+ if(c == 0)
+ c = FontFileGetc(f);
+
+ for(;;) {
+ if(c <= 0 || c == '\n')
+ return 1;
+ else if(c == '#') {
+ skipEndOfLine(f,c);
+ return 1;
+ }
+ else if(c == ' ' || c == '\t') {
+ skipEndOfLine(f,c);
+ return 0;
+ }
+ c = FontFileGetc(f);
+ }
+}
+
+/* Get a token; we're at first char */
+static int
+gettoken(FontFilePtr f, int c, int *cp)
+{
+ char *p;
+
+ if(c <= 0)
+ c = FontFileGetc(f);
+
+ if(c <= 0) {
+ return EOF_TOKEN;
+ }
+
+ while(c == ' ' || c == '\t')
+ c = FontFileGetc(f);
+
+ if(c=='\n') {
+ return EOL_TOKEN;
+ } else if(c == '#') {
+ skipEndOfLine(f,c);
+ return EOL_TOKEN;
+ } else if(c >= '0' && c <= '9') {
+ number_value = getnum(f,c,cp);
+ return NUMBER_TOKEN;
+ } else if((c >= 'A' && c <= 'Z') ||
+ (c >= 'a' && c <= 'z') ||
+ c == '/' || c == '_' || c == '-' || c == '.') {
+ p = keyword_value;
+ *p++ = c;
+ while(p-keyword_value < MAXKEYWORDLEN) {
+ c = FontFileGetc(f);
+ if(c <= ' ' || c > '~' || c == '#')
+ break;
+ *p++ = c;
+ }
+ *cp = c;
+ *p = '\0';
+ return KEYWORD_TOKEN;
+ } else {
+ *cp = c;
+ return ERROR_TOKEN;
+ }
+}
+
+/* Parse a line.
+ * Always skips to the beginning of a new line, even if an error occurs */
+static int
+getnextline(FontFilePtr f)
+{
+ int c, token;
+ c = FontFileGetc(f);
+ if(c <= 0)
+ return EOF_LINE;
+
+ again:
+ token=gettoken(f,c,&c);
+
+ switch(token) {
+ case EOF_TOKEN:
+ return EOF_LINE;
+ case EOL_TOKEN:
+ /* empty line */
+ c = FontFileGetc(f);
+ goto again;
+ case NUMBER_TOKEN:
+ value1 = number_value;
+ token = gettoken(f,c,&c);
+ switch(token) {
+ case NUMBER_TOKEN:
+ value2 = number_value;
+ token = gettoken(f,c,&c);
+ switch(token) {
+ case NUMBER_TOKEN:
+ value3 = number_value;
+ return CODE_RANGE_LINE;
+ case EOL_TOKEN:
+ return CODE_LINE;
+ default:
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ case KEYWORD_TOKEN:
+ if(!endOfLine(f,c))
+ return ERROR_LINE;
+ else
+ return NAME_LINE;
+ default:
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ case KEYWORD_TOKEN:
+ if(!strcasecmp(keyword_value, "STARTENCODING")) {
+ token = gettoken(f,c,&c);
+ if(token == KEYWORD_TOKEN) {
+ if(endOfLine(f,c))
+ return STARTENCODING_LINE;
+ else
+ return ERROR_LINE;
+ } else {
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ } else if(!strcasecmp(keyword_value, "ALIAS")) {
+ token = gettoken(f,c,&c);
+ if(token == KEYWORD_TOKEN) {
+ if(endOfLine(f,c))
+ return ALIAS_LINE;
+ else
+ return ERROR_LINE;
+ } else {
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ } else if(!strcasecmp(keyword_value, "SIZE")) {
+ token = gettoken(f,c,&c);
+ if(token == NUMBER_TOKEN) {
+ value1 = number_value;
+ token = gettoken(f,c,&c);
+ switch(token) {
+ case NUMBER_TOKEN:
+ value2 = number_value;
+ return SIZE_LINE;
+ case EOL_TOKEN:
+ value2=0;
+ return SIZE_LINE;
+ default:
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ } else {
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ } else if(!strcasecmp(keyword_value, "FIRSTINDEX")) {
+ token = gettoken(f,c,&c);
+ if(token == NUMBER_TOKEN) {
+ value1 = number_value;
+ token = gettoken(f,c,&c);
+ switch(token) {
+ case NUMBER_TOKEN:
+ value2 = number_value;
+ return FIRSTINDEX_LINE;
+ case EOL_TOKEN:
+ value2 = 0;
+ return FIRSTINDEX_LINE;
+ default:
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ } else {
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ } else if(!strcasecmp(keyword_value, "STARTMAPPING")) {
+ keyword_value[0] = 0;
+ value1 = 0; value1 = 0;
+ /* first a keyword */
+ token = gettoken(f,c,&c);
+ if(token != KEYWORD_TOKEN) {
+ skipEndOfLine(f, c);
+ return ERROR_LINE;
+ }
+
+ /* optional first integer */
+ token = gettoken(f,c,&c);
+ if(token == NUMBER_TOKEN) {
+ value1 = number_value;
+ } else if(token == EOL_TOKEN) {
+ return STARTMAPPING_LINE;
+ } else {
+ skipEndOfLine(f, c);
+ return ERROR_LINE;
+ }
+
+ /* optional second integer */
+ token = gettoken(f,c,&c);
+ if(token == NUMBER_TOKEN) {
+ value2 = number_value;
+ } else if(token == EOL_TOKEN) {
+ return STARTMAPPING_LINE;
+ } else {
+ skipEndOfLine(f, c);
+ return ERROR_LINE;
+ }
+
+ if(!endOfLine(f,c))
+ return ERROR_LINE;
+ else {
+ return STARTMAPPING_LINE;
+ }
+ } else if(!strcasecmp(keyword_value, "UNDEFINE")) {
+ /* first integer */
+ token = gettoken(f,c,&c);
+ if(token != NUMBER_TOKEN) {
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ value1 = number_value;
+ /* optional second integer */
+ token = gettoken(f,c,&c);
+ if(token == EOL_TOKEN) {
+ value2 = value1;
+ return CODE_UNDEFINE_LINE;
+ } else if(token == NUMBER_TOKEN) {
+ value2 = number_value;
+ if(endOfLine(f,c)) {
+ return CODE_UNDEFINE_LINE;
+ } else
+ return ERROR_LINE;
+ } else {
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ } else if(!strcasecmp(keyword_value, "ENDENCODING")) {
+ if(endOfLine(f,c))
+ return EOF_LINE;
+ else
+ return ERROR_LINE;
+ } else if(!strcasecmp(keyword_value, "ENDMAPPING")) {
+ if(endOfLine(f,c))
+ return ENDMAPPING_LINE;
+ else
+ return ERROR_LINE;
+ } else {
+ skipEndOfLine(f,c);
+ return ERROR_LINE;
+ }
+ default:
+ return ERROR_LINE;
+ }
+}
+
+static void
+install_mapping(FontEncPtr encoding, FontMapPtr mapping)
+{
+ FontMapPtr m;
+
+ if(encoding->mappings == NULL)
+ encoding->mappings = mapping;
+ else {
+ m = encoding->mappings;
+ while(m->next != NULL)
+ m = m->next;
+ m->next = mapping;
+ }
+ mapping->next = NULL;
+ mapping->encoding = encoding;
+}
+
+static int
+setCode(unsigned from, unsigned to, unsigned row_size,
+ unsigned *first, unsigned *last,
+ unsigned *encsize, unsigned short **enc)
+{
+ unsigned index, i;
+ unsigned short *newenc;
+
+ if(from>0xFFFF)
+ return 0; /* success */
+
+ if(row_size==0)
+ index=from;
+ else {
+ if((value1 & 0xFF) >= row_size)
+ return 0; /* ignore out of range mappings */
+ index = (from>>8) * row_size + (from&0xFF);
+ }
+
+ /* Optimize away useless identity mappings. This is only expected
+ to be useful with linear encodings. */
+ if(index == to && (index < *first || index > *last))
+ return 0;
+ if(*encsize == 0) {
+ *encsize = (index < 256) ? 256 : 0x10000;
+ *enc = (unsigned short*)xalloc((*encsize) * sizeof(unsigned short));
+ if(*enc == NULL) {
+ *encsize = 0;
+ return 1;
+ }
+ } else if(*encsize <= index) {
+ *encsize = 0x10000;
+ if((newenc = (unsigned short*)xrealloc(enc, *encsize))==NULL)
+ return 1;
+ *enc = newenc;
+ }
+ if(*first > *last) {
+ *first = *last = index;
+ }
+ if(index < *first) {
+ for(i = index; i < *first; i++)
+ (*enc)[i] = i;
+ *first = index;
+ }
+ if(index > *last) {
+ for(i = *last + 1; i <= index; i++)
+ (*enc)[i] = i;
+ *last = index;
+ }
+ (*enc)[index] = to;
+ return 0;
+}
+
+/* Parser. If headerOnly is true, we're only interested in the
+ data contained in the encoding file's header. */
+
+/* As font encodings are currently never freed, the allocations done
+ by this function are mostly its private business. Note, however,
+ that FontEncIdentify needs to free the header fields -- so if you
+ change this function, you may need to change FontEncIdentify. */
+
+/* I want a garbage collector. */
+
+static FontEncPtr
+parseEncodingFile(FontFilePtr f, int headerOnly)
+{
+ int line;
+
+ unsigned short *enc=NULL;
+ char **nam = NULL, **newnam;
+ unsigned i, first = 0xFFFF, last=0, encsize=0, namsize=0;
+ FontEncPtr encoding = NULL;
+ FontMapPtr mapping = NULL;
+ FontEncSimpleMapPtr sm;
+ FontEncSimpleNamePtr sn;
+ char *aliases[MAXALIASES];
+ int numaliases=0;
+
+#if 0
+ /* GCC complains about unused labels. Please fix GCC rather than
+ obfuscating my code. */
+ no_encoding:
+#endif
+ line = getnextline(f);
+ switch(line) {
+ case EOF_LINE:
+ goto error;
+ case STARTENCODING_LINE:
+ encoding = (FontEncPtr)xalloc(sizeof(FontEncRec));
+ if(encoding == NULL)
+ goto error;
+ encoding->name = (char*)xalloc(strlen(keyword_value)+1);
+ if(encoding->name == NULL)
+ goto error;
+ strcpy(encoding->name, keyword_value);
+ encoding->size = 256;
+ encoding->row_size = 0;
+ encoding->mappings = NULL;
+ encoding->next = NULL;
+ encoding->first = encoding->first_col=0;
+ goto no_mapping;
+ default:
+ goto error;
+ }
+
+ no_mapping:
+ line = getnextline(f);
+ switch(line) {
+ case EOF_LINE: goto done;
+ case ALIAS_LINE:
+ if(numaliases < MAXALIASES) {
+ aliases[numaliases] = (char*)xalloc(strlen(keyword_value)+1);
+ if(aliases[numaliases] == NULL)
+ goto error;
+ strcpy(aliases[numaliases], keyword_value);
+ numaliases++;
+ }
+ goto no_mapping;
+ case SIZE_LINE:
+ encoding->size = value1;
+ encoding->row_size = value2;
+ goto no_mapping;
+ case FIRSTINDEX_LINE:
+ encoding->first = value1;
+ encoding->first_col = value2;
+ goto no_mapping;
+ case STARTMAPPING_LINE:
+ if(headerOnly)
+ goto done;
+ if(!strcasecmp(keyword_value, "unicode")) {
+ mapping = (FontMapPtr)xalloc(sizeof(FontMapRec));
+ if(mapping == NULL)
+ goto error;
+ mapping->type = FONT_ENCODING_UNICODE;
+ mapping->pid = 0;
+ mapping->eid = 0;
+ mapping->recode = 0;
+ mapping->name = 0;
+ mapping->client_data = 0;
+ mapping->next = 0;
+ goto mapping;
+ } else if(!strcasecmp(keyword_value, "cmap")) {
+ mapping = (FontMapPtr)xalloc(sizeof(FontMapRec));
+ if(mapping == NULL)
+ goto error;
+ mapping->type = FONT_ENCODING_TRUETYPE;
+ mapping->pid = value1;
+ mapping->eid = value2;
+ mapping->recode = 0;
+ mapping->name = 0;
+ mapping->client_data = 0;
+ mapping->next = 0;
+ goto mapping;
+ } else if(!strcasecmp(keyword_value, "postscript")) {
+ mapping = (FontMapPtr)xalloc(sizeof(FontMapRec));
+ if(mapping == NULL)
+ goto error;
+ mapping->type = FONT_ENCODING_POSTSCRIPT;
+ mapping->pid = 0;
+ mapping->eid = 0;
+ mapping->recode = 0;
+ mapping->name = 0;
+ mapping->client_data = 0;
+ mapping->next = 0;
+ goto string_mapping;
+ } else { /* unknown mapping type -- ignore */
+ goto skipmapping;
+ }
+ /* NOTREACHED */
+ goto error;
+ default: goto no_mapping; /* ignore unknown lines */
+ }
+
+ skipmapping:
+ line = getnextline(f);
+ switch(line) {
+ case ENDMAPPING_LINE:
+ goto no_mapping;
+ case EOF_LINE:
+ goto error;
+ default:
+ goto skipmapping;
+ }
+
+ mapping:
+ line = getnextline(f);
+ switch(line) {
+ case EOF_LINE: goto error;
+ case ENDMAPPING_LINE:
+ mapping->recode = FontEncSimpleRecode;
+ mapping->name = FontEncUndefinedName;
+ mapping->client_data = sm =
+ (FontEncSimpleMapPtr)xalloc(sizeof(FontEncSimpleMapRec));
+ if(sm == NULL)
+ goto error;
+ sm->row_size = encoding->row_size;
+ if(first <= last) {
+ sm->first = first;
+ sm->len=last-first+1;
+ sm->map =
+ (unsigned short*)xalloc(sm->len * sizeof(unsigned short));
+ if(sm->map == NULL) {
+ xfree(sm);
+ mapping->client_data = sm = NULL;
+ goto error;
+ }
+ } else {
+ sm->first = 0;
+ sm->len = 0;
+ sm->map = 0;
+ }
+ for(i=0; i < sm->len; i++)
+ sm -> map[i] = enc[first+i];
+ install_mapping(encoding, mapping);
+ mapping = 0;
+ first = 0xFFFF; last=0;
+ goto no_mapping;
+
+ case CODE_LINE:
+ if(setCode(value1, value2, encoding->row_size,
+ &first, &last, &encsize, &enc))
+ goto error;
+ goto mapping;
+
+ case CODE_RANGE_LINE:
+ if(value1 > 0x10000)
+ value1 = 0x10000;
+ if(value2 > 0x10000)
+ value2 = 0x10000;
+ if(value2 < value1)
+ goto mapping;
+ /* Do the last value first to avoid having to realloc() */
+ if(setCode(value2, value3+(value2-value1), encoding->row_size,
+ &first, &last, &encsize, &enc))
+ goto error;
+ for(i=value1; i<value2; i++) {
+ if(setCode(i, value3+(i-value1), encoding->row_size,
+ &first, &last, &encsize, &enc))
+ goto error;
+ }
+ goto mapping;
+
+ case CODE_UNDEFINE_LINE:
+ if(value1 > 0x10000)
+ value1 = 0x10000;
+ if(value2 > 0x10000)
+ value2 = 0x10000;
+ if(value2 < value1)
+ goto mapping;
+ /* Do the last value first to avoid having to realloc() */
+ if(setCode(value2, 0, encoding->row_size,
+ &first, &last, &encsize, &enc))
+ goto error;
+ for(i = value1; i < value2; i++) {
+ if(setCode(i, 0, encoding->row_size,
+ &first, &last, &encsize, &enc))
+ goto error;
+ }
+ goto mapping;
+
+ default: goto mapping; /* ignore unknown lines */
+ }
+
+ string_mapping:
+ line = getnextline(f);
+ switch(line) {
+ case EOF_LINE: goto error;
+ case ENDMAPPING_LINE:
+ mapping->recode = FontEncUndefinedRecode;
+ mapping->name = FontEncSimpleName;
+ mapping->client_data = sn =
+ (FontEncSimpleNamePtr)xalloc(sizeof(FontEncSimpleNameRec));
+ if(sn == NULL)
+ goto error;
+ if(first > last) {
+ xfree(sn);
+ mapping->client_data = sn = NULL;
+ goto error;
+ }
+ sn->first = first;
+ sn->len = last - first + 1;
+ sn->map = (char**)xalloc(sn->len*sizeof(char*));
+ if(sn->map == NULL) {
+ xfree(sn);
+ mapping->client_data = sn = NULL;
+ goto error;
+ }
+ for(i = 0; i < sn->len; i++)
+ sn->map[i] = nam[first+i];
+ install_mapping(encoding,mapping);
+ mapping = 0;
+ first = 0xFFFF; last=0;
+ goto no_mapping;
+ case NAME_LINE:
+ if(value1 >= 0x10000) goto string_mapping;
+ if(namsize == 0) {
+ namsize = (value1) < 256 ? 256 : 0x10000;
+ nam = (char**)xalloc(namsize * sizeof(char*));
+ if(nam == NULL) {
+ namsize=0;
+ goto error;
+ }
+ } else if(namsize <= value1) {
+ namsize = 0x10000;
+ if((newnam = (char**)xrealloc(nam, namsize)) == NULL)
+ goto error;
+ nam = newnam;
+ }
+ if(first > last) {
+ first = last = value1;
+ }
+ if(value1 < first) {
+ for(i = value1; i < first; i++)
+ nam[i] = NULL;
+ first = value1;
+ }
+ if(value1 > last) {
+ for(i=last+1; i <= value1; i++)
+ nam[i]=NULL;
+ last = value1;
+ }
+ nam[value1] = (char*)xalloc(strlen(keyword_value)+1);
+ if(nam[value1] == NULL) {
+ goto error;
+ }
+ strcpy(nam[value1], keyword_value);
+ goto string_mapping;
+
+ default: goto string_mapping; /* ignore unknown lines */
+ }
+
+ done:
+ if(encsize) xfree(enc); encsize=0; enc = NULL;
+ if(namsize) xfree(nam); namsize=0; nam = NULL; /* don't free entries! */
+
+ encoding->aliases=NULL;
+ if(numaliases) {
+ encoding->aliases = (char**)xalloc((numaliases+1)*sizeof(char*));
+ if(encoding->aliases == NULL)
+ goto error;
+ for(i=0; i<numaliases; i++)
+ encoding->aliases[i] = aliases[i];
+ encoding->aliases[numaliases]=NULL;
+ }
+
+ return encoding;
+
+error:
+ if(encsize) xfree(enc); encsize=0;
+ if(namsize) {
+ for(i = first; i <= last; i++)
+ if(nam[i])
+ xfree(nam[i]);
+ xfree(nam);
+ namsize = 0;
+ }
+ if(mapping) {
+ if(mapping->client_data) xfree(mapping->client_data);
+ xfree(mapping);
+ }
+ if(encoding) {
+ if(encoding->name) xfree(encoding->name);
+ for(mapping = encoding->mappings; mapping; mapping = mapping->next) {
+ if(mapping->client_data) xfree(mapping->client_data);
+ xfree(mapping);
+ }
+ xfree(encoding);
+ }
+ for(i = 0; i < numaliases; i++)
+ xfree(aliases[i]);
+ /* We don't need to free sn and sm as they handled locally in the body.*/
+ return 0;
+}
+
+char*
+FontEncDirectory()
+{
+ static char* dir = NULL;
+
+ if(dir == NULL) {
+ char *c = getenv("FONT_ENCODINGS_DIRECTORY");
+ if(c) {
+ dir = malloc(strlen(c) + 1);
+ if(!dir)
+ return NULL;
+ strcpy(dir, c);
+ } else {
+ dir = FONT_ENCODINGS_DIRECTORY;
+ }
+ }
+ return dir;
+}
+
+static void
+parseFontFileName(const char *fontFileName, char *buf, char *dir)
+{
+ const char *p;
+ char *q, *lastslash;
+
+ for(p = fontFileName, q = dir, lastslash = NULL; *p; p++, q++) {
+ *q = *p;
+ if(*p == '/')
+ lastslash = q+1;
+ }
+
+ if(!lastslash)
+ lastslash = dir;
+
+ *lastslash = '\0';
+
+ if(buf && strlen(dir) + 14 < MAXFONTFILENAMELEN) {
+ strcpy(buf, dir);
+ strcat(buf, "encodings.dir");
+ }
+}
+
+static FontEncPtr
+FontEncReallyReallyLoad(const char *charset,
+ const char *dirname, const char *dir)
+{
+ FontFilePtr f;
+ FILE *file;
+ FontEncPtr encoding;
+ char file_name[MAXFONTFILENAMELEN], encoding_name[MAXFONTNAMELEN],
+ buf[MAXFONTFILENAMELEN];
+ int count, n;
+
+ /* As we don't really expect to open encodings that often, we don't
+ take the trouble of caching encodings directories. */
+
+ if((file = fopen(dirname, "r")) == NULL) {
+ return NULL;
+ }
+
+ count = fscanf(file, "%d\n", &n);
+ if(count == EOF || count != 1) {
+ fclose(file);
+ return NULL;
+ }
+
+ encoding = NULL;
+ for(;;) {
+ count = fscanf(file, "%s %[^\n]\n", encoding_name, file_name);
+ if(count == EOF)
+ break;
+ if(count != 2)
+ break;
+
+ if(!strcasecmp(encoding_name, charset)) {
+ /* Found it */
+ if(file_name[0] != '/') {
+ if(strlen(dir) + strlen(file_name) >= MAXFONTFILENAMELEN)
+ return NULL;
+ strcpy(buf, dir);
+ strcat(buf, file_name);
+ } else {
+ strcpy(buf , file_name);
+ }
+
+ f = FontFileOpen(buf);
+ if(f == NULL) {
+ return NULL;
+ }
+ encoding = parseEncodingFile(f, 0);
+ FontFileClose(f);
+ break;
+ }
+ }
+
+ fclose(file);
+
+ return encoding;
+}
+
+/* Parser ntrypoint -- used by FontEncLoad */
+FontEncPtr
+FontEncReallyLoad(const char *charset, const char *fontFileName)
+{
+ FontEncPtr encoding;
+ char dir[MAXFONTFILENAMELEN], dirname[MAXFONTFILENAMELEN];
+ char *d;
+
+ if(fontFileName) {
+ parseFontFileName(fontFileName, dirname, dir);
+ encoding = FontEncReallyReallyLoad(charset, dirname, dir);
+ if(encoding)
+ return(encoding);
+ }
+
+ d = FontEncDirectory();
+ if(d) {
+ parseFontFileName(d, NULL, dir);
+ encoding = FontEncReallyReallyLoad(charset, d, dir);
+ return encoding;
+ }
+
+ return NULL;
+}
+
+/* Return a NULL-terminated array of encoding names. Note that this
+ * function has incestuous knowledge of the allocations done by
+ * parseEncodingFile. */
+
+char **
+FontEncIdentify(const char *fileName)
+{
+ FontFilePtr f;
+ FontEncPtr encoding;
+ char **names, **name, **alias;
+ int numaliases;
+
+ if((f = FontFileOpen(fileName))==NULL) {
+ return NULL;
+ }
+ encoding = parseEncodingFile(f, 1);
+ FontFileClose(f);
+
+ if(!encoding)
+ return NULL;
+
+ numaliases = 0;
+ if(encoding->aliases)
+ for(alias = encoding->aliases; *alias; alias++)
+ numaliases++;
+
+ names = (char**)xalloc((numaliases+2)*sizeof(char*));
+ if(names == NULL) {
+ if(encoding->aliases)
+ xfree(encoding->aliases);
+ xfree(encoding);
+ return NULL;
+ }
+
+ name = names;
+ *(name++) = encoding->name;
+ if(numaliases > 0)
+ for(alias = encoding->aliases; *alias; alias++, name++)
+ *name = *alias;
+
+ *name = 0;
+ xfree(encoding->aliases);
+ xfree(encoding);
+
+ return names;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 17:28:33 +0000